Failing RF Loopback Test -Any Advice?

Projects LimeSDR
1

[ TESTING STARTED ]
->Start time: Thu May 20 16:54:29 2021
->LimeSuite version: 20.10.0-g1480bfea
->Device: LimeSDR-USB, media=USB 3.0, module=FX3, serial=0009072C02882F32, index=0, HW=4, GW=2.23
Serial Number: 0009072C02882F32
Chip temperature: 48 C
[ Clock Network Test ]
->FX3 GPIF clock test
Test results: 25554; 29310; 33066 - PASSED
->Si5351C test
CLK0: 17554 / 17554 - PASSED
CLK1: 17554 / 17554 - PASSED
CLK2: 17554 / 17554 - PASSED
CLK3: 17554 / 17554 - PASSED
CLK4: 17554 / 17554 - PASSED
CLK5: 17554 / 17554 - PASSED
CLK6: 17554 / 17554 - PASSED
->ADF4002 Test
Result: 10 - PASSED
->VCTCXO test
Results : 5112983 (min); 5113115 (max) - PASSED
->Clock Network Test PASSED
[ FPGA EEPROM Test ]
->Read EEPROM
->Read data: 12 08 02 12 08 02 02
->FPGA EEPROM Test PASSED
[ LMS7002M Test ]
->Perform Registers Test
->External Reset line test
Reg 0x20: Write value 0xFFFD, Read value 0xFFFD
Reg 0x20: value after reset 0x0FFFF
->LMS7002M Test PASSED
[ RF Loopback Test ]
Note: The test should be run without anything connected to RF ports
->Configure LMS
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
SetPllFrequency: error configuring phase
LML TX phase search FAIL
Failed to set sample rate
->RF Loopback Test FAILED
=> Board tests FAILED <=
Elapsed time: 3.63 seconds

2

First try to lower chip temperature (currently is 48C).

3

Ok, thanks for the help, I will try that out.

4

I let the board cool for an hour and ran the test again but, even though its cool the reading still says chip temperature is 46C and I get the same output as before. Could this temperature reading be due to some hardware or software issue?

5

Tagging @Zack.

6

This tells that there is IQ data interface problem between FPGA and LMS7002M. Contact the seller for RMA.

7

Ok, thanks